当按下某个键时，如何跳过for循环中的迭代？

Question

So I have a loop like this:

import time

for i in range(100):
    print(i)
    time.sleep(2)

I want to to be able skip an iteration of that loop by pressing a key on the keyboard (for example Enter). The output I expect is:

   1
   2
   3
  "Enter" key pressed!
   5

Is it possible to do using python?

EDIT : I need to be able to get the keystroke in the background, so that it works while another application is open

Answer 1

You can catch KeyboardInterrupt to detect using pressing "Ctrl+c"

for i in range(100):    
    try:
        time.sleep(2)
    except KeyboardInterrupt:     
        print ('Ctrl+c key pressed!')
        continue

    print(i)

Sample Output

0
^CCtrl+c key pressed!
2
3
^CCtrl+c key pressed!
5
6
7

Answer 2

Using the keyboard module, this can be achieved easily, just note you have to be pressing the key when the if is evaluated...

In [1]: import time, keyboard as kb

In [2]: for i in range(10):
   ...:     if kb.is_pressed('enter'):
   ...:         print('enter is pressed, skipping {}'.format(i))
   ...:     else:
   ...:         print(i)
   ...:     time.sleep(1)
   ...:     
0

1



enter is pressed, skipping 2



enter is pressed, skipping 3





enter is pressed, skipping 4




enter is pressed, skipping 5


6
7
8


enter is pressed, skipping 9